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Finding the Fourth Proportional to 176,539.60, 264,712.20 and 71,239.60

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Solution

The fourth proportional to 176,539.60, 264,712.20 and 71,239.60 is: 106,820.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,539.60 : 264,712.20 = 71,239.60 : x
  2. Step 2: Convert to fraction form
    176,539.60/264,712.20 = 71,239.60/x
  3. Step 3: Cross multiply
    176,539.60x = 264,712.20 × 71,239.60
  4. Step 4: Simplify right side
    176,539.60x = 18,857,991,243.12
  5. Step 5: Solve for x
    x = 18,857,991,243.12/176,539.60
  6. Step 6: Final answer
    x = 106,820.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.